Influência da disponibilidade de alimento na área de vida de Bradypus variegatus (Xenarthra: Bradypodidae) em floresta alagada de Igapó
Use of space by animals is influenced by both biotic and abiotic factors. For herbivorous mammals seasonality in forage production is considered to be the main driver of movement patterns, home range size and consequently, the use of space. While such effects are well-researched in temperate regi...
| Autor principal: | Castro-Sa, Matheus Jose |
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| Grau: | Dissertação |
| Idioma: | por |
| Publicado em: |
Instituto Nacional de Pesquisas da Amazônia - INPA
2020
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| Assuntos: | |
| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/12012 http://lattes.cnpq.br/6939416101635594 |
| Resumo: |
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Use of space by animals is influenced by both biotic and abiotic factors. For
herbivorous mammals seasonality in forage production is considered to be the main
driver of movement patterns, home range size and consequently, the use of space. While
such effects are well-researched in temperate regions and the Paleotropics, little is
known about the bottom up effect of productivity on herbivorous mammals in the
neotropics. One of the most abundant herbivores in the Americas is Brown-throated
sloth, Bradypus variagatus. The species’ wide distribution includes populations with a
great variety of activity patterns and habitat types. In the Amazon basin the species can
be found in a strongly seasonal environment, the igapó’’ – a seasonally-flooded riverine
forests with strongly-pulsed leaf-production phenology. Using a combination of
telemetry and phenological analysis, this study recorded patterns in sloth moviment, and
relate these to seasonal and within-forest differences in food availability. Mean home
range size was 1.29ha mean daily moviment was 32m, and did not vary seasonally.
Diet was entirely of leaves and Hevea spruceana was a important resource and used in
all seasons. |